net reproduction rate (NRR)

简明释义

净再生产率,净再生育率

英英释义

例句

1.An increase in the net reproduction rate (NRR) can lead to economic growth in the long term.

长期来看，净生育率 (NRR)的增加可以促进经济增长。

2.Government policies aimed at increasing the net reproduction rate (NRR) include parental leave and childcare support.

旨在提高净生育率 (NRR)的政府政策包括父母假和儿童保育支持。

3.Researchers are studying the net reproduction rate (NRR) to understand population sustainability.

研究人员正在研究净生育率 (NRR)以了解人口的可持续性。

4.A net reproduction rate (NRR) below 1 indicates that a population is not replacing itself.

如果净生育率 (NRR)低于1，则表明一个种群没有自我替代。

5.The country is facing a decline in its net reproduction rate (NRR) due to lower birth rates.

由于出生率降低，该国面临其净生育率 (NRR)的下降。

作文

The concept of net reproduction rate (NRR) is essential in demography and population studies. It refers to the average number of daughters that would be born to a woman over her lifetime, assuming that she is subject to the exact current age-specific fertility rates and mortality rates. The net reproduction rate (NRR) provides a more nuanced understanding of population growth compared to the crude birth rate or total fertility rate because it takes into account the mortality rates that affect female offspring. Understanding the net reproduction rate (NRR) is crucial for policymakers and researchers as it helps assess whether a population is replacing itself. An NRR of 1 indicates that each generation is producing enough daughters to replace itself, while an NRR greater than 1 suggests population growth, and an NRR less than 1 indicates decline. For example, many developed countries have seen their net reproduction rate (NRR) fall below 1 due to various factors such as increased access to education for women, career prioritization, and economic considerations that lead to delayed childbirth.In contrast, developing countries often experience higher NRRs due to higher fertility rates and lower access to family planning resources. However, as these nations develop and improve healthcare and education, their net reproduction rate (NRR) tends to decline. This transition can lead to significant demographic shifts, influencing labor markets, economic growth, and social structures.The implications of changes in the net reproduction rate (NRR) are profound. A declining NRR can lead to an aging population, which poses challenges for social security systems, healthcare, and workforce sustainability. Countries with low NRRs may need to implement policies that encourage higher birth rates, such as parental leave incentives, childcare support, and financial assistance for families. Conversely, nations with high NRRs might face challenges related to overpopulation, including resource depletion, environmental degradation, and urban overcrowding.Research on the net reproduction rate (NRR) is ongoing, as demographers seek to understand the complex interplay between fertility, mortality, and migration. For instance, migration can significantly impact the NRR of a country. When individuals move from one country to another, they bring their fertility patterns with them, which can either bolster or diminish the local NRR.In conclusion, the net reproduction rate (NRR) is a vital statistic that reflects the reproductive behavior of a population and its potential for future growth. It serves as a critical tool for understanding demographic trends and informing policy decisions. As global populations continue to change, the study of NRR will remain an important area of research, helping societies navigate the challenges and opportunities presented by shifting demographics. By monitoring the net reproduction rate (NRR), we can better prepare for the future and ensure sustainable development for generations to come.

净繁殖率（NRR）的概念在人口统计学和人口研究中至关重要。它指的是假设一个女性在其一生中受到当前年龄特定的生育率和死亡率的影响，平均会生育多少个女儿。净繁殖率（NRR）提供了比粗出生率或总生育率更细致的人口增长理解，因为它考虑了影响女性后代的死亡率。理解净繁殖率（NRR）对于政策制定者和研究人员至关重要，因为它有助于评估一个人口是否在自我更替。NRR为1表示每一代人生产足够的女儿以替代自己，而NRR大于1则暗示人口增长，NRR小于1则表明下降。例如，许多发达国家的净繁殖率（NRR）已降至1以下，原因包括女性教育的提高、职业优先级的变化以及导致生育延迟的经济因素。相比之下，发展中国家由于生育率较高和缺乏计划生育资源，通常经历更高的NRR。然而，随着这些国家的发展和医疗、教育的改善，其净繁殖率（NRR）往往会下降。这种转变可能导致显著的人口结构变化，影响劳动力市场、经济增长和社会结构。净繁殖率（NRR）变化的影响深远。NRR下降可能导致人口老龄化，这对社会保障系统、医疗保健和劳动力可持续性提出挑战。低NRR的国家可能需要实施鼓励生育的政策，例如产假激励、育儿支持和家庭财政援助。相反，NRR高的国家可能面临与过度人口相关的挑战，包括资源枯竭、环境退化和城市过度拥挤。关于净繁殖率（NRR）的研究仍在继续，人口统计学家试图理解生育、死亡和迁移之间的复杂相互作用。例如，迁移可以显著影响一个国家的NRR。当个人从一个国家迁移到另一个国家时，他们带来了自己的生育模式，这可能会增强或削弱当地的NRR。总之，净繁殖率（NRR）是一个反映人口生育行为及其未来增长潜力的重要统计数据。它作为理解人口趋势和指导政策决策的关键工具。随着全球人口的持续变化，NRR的研究将仍然是一个重要的研究领域，帮助社会应对人口结构变化所带来的挑战和机遇。通过监测净繁殖率（NRR），我们可以更好地为未来做好准备，确保可持续发展，为子孙后代创造良好的生存环境。